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Comparison of the effect of some phenolic compounds on wheat coleoptile section growth with their effect on iaa-oxidase activity

Srovnání vlivu některých fenolických ;látek na růst segmentů pšeničných koleoptilí s jejich vlivem na aktivltu IAA-oxidásy.

  • Published:
Biologia Plantarum

Abstract

P-coumaric acid (HCA), 2,4-dichlorophenol (DCP) and resorcionol acted as cofactors for IAA-oxidase isolated from young wheat plants. Ferulic acid (FA) and 3,4-dihydroxybenzoic acid (DHBA) induced a lag phase prior to IAA oxidation. HCA, FA (0.2-1 mg ml-1) and DCP (0.03-1 mg ml-1) strongly inhibited wheat coleoptile section growth. DHBA (0.01-1 mg ml-1) slightly stimulated it and resorcinol was without effect. HCA inhibited IAA-induced growth of coleoptile sections and FA stimulated it at low IAA levels and inhibited it at higher ones. DHBA, DCP and resorcinol did not affect IAA-induced growth of coleoptile sections.

Abstract

Kyselina p-kumarová (HCA), 2,4-dichlorfenol (DCP) a resorcin působilyin vitro jako kofaktory IAA-oxidasy isolované z mladých rostlin pšenice. Kyseliny ferulová (FA) a 3,4-dihydroxybenzoová (DHBA) indukovaly před oxidací IAA lag fázi. HCA a FA (0,2-1 mg ml-1) a DCP (0,03-1 mg ml-1) silně inhibovaly růst segmentů pšeničných koleoptilí. DHBA (0,01-1 mg ml-1 jej mírně stimulovala a resoroin jej téměř neovlivnil. HCA brzdila IAA-indukovaný růst segmentů koleoptilí. FA jej při nízkýoh koncentracích IAA stimulovala, ale při vyšších koncentracích IAA brzdila. DHBA, DCP a resorcin neměly na IAA-indukovaný růst segmentů koleoptilí žádný vliv.

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Abbreviations

IAA...:

indole-3-acetic acid

HCA..:

p-coumaric acid (4-hydroxycinnamic acid)

FA...:

ferulic acid(3-methoxy, 4-hydroxyoinnamio acid)

DCP...:

2,4-dichlorophenol

DHBA...:

3,4-dihydroxybenzoic acid

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  1. Institute of Plant Nutrition, Research Institute of Crop Production, 161 06 Praha 6-Ruzyně, Drnovská 507, Czechoslovakia

    Ivana MacháčKOVá & Z. Zmrhal

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  1. Ivana MacháčKOVá
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  2. Z. Zmrhal
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MacháčKOVá, I., Zmrhal, Z. Comparison of the effect of some phenolic compounds on wheat coleoptile section growth with their effect on iaa-oxidase activity. Biol Plant 18, 147–151 (1976). https://doi.org/10.1007/BF02923154

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  • DOI: https://doi.org/10.1007/BF02923154

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